There are several ways to make the background of an image transparent or appear to be here a just a few.

To remove the background color from a Gif image which you want to put onto another background of a different color, open the picture in Paintshop Pro.

Select the magic wand tool and left-click on the color which you want to remove, (make transparent). Small lines should appear around then image (marching ants). Then select the flood fill tool, go to the color palette and the flood fill tool will automatically change into the Eye dropper tool so you will be able to select the background color of your website or the color of the background you want your image on. Go over to the image and left click. And that is it, the background will change color to your chosen color, so when the image is placed on to your website it will appear that the background of the image is transparent.

Another way is. If the image is already transparent. Open a new image. color the new image the color you want. Then go over to the already transparent image, select it, click on edit -> copy. Reselect your new image -> edit -> paste-> as a transparent selection.